/**
 * ***************************************************************************** Copyright (c) 2004,
 * 2006 Subclipse project and others. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies
 * this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * <p>Contributors: Subclipse project committers - initial API and implementation
 * ****************************************************************************
 */
package org.tigris.subversion.subclipse.ui.annotations;

import java.util.LinkedList;
import java.util.List;
import org.tigris.subversion.svnclientadapter.ISVNAnnotations;

public class AnnotateBlocks {
  private List blocks = new LinkedList();

  public AnnotateBlocks(ISVNAnnotations svnAnnotations) {
    for (int i = 0; svnAnnotations.getLine(i) != null; i++) {
      AnnotateBlock block =
          new AnnotateBlock(
              svnAnnotations.getRevision(i),
              svnAnnotations.getAuthor(i),
              svnAnnotations.getChanged(i),
              i,
              i);
      add(block);
    }
  }

  /**
   * Add an annotate block merging this block with the previous block if it is part of the same
   * change.
   *
   * @param aBlock
   */
  private void add(AnnotateBlock aBlock) {

    int size = blocks.size();
    if (size == 0) {
      blocks.add(aBlock);
    } else {
      AnnotateBlock lastBlock = (AnnotateBlock) blocks.get(size - 1);
      if (lastBlock.getRevision() == aBlock.getRevision()) {
        lastBlock.setEndLine(aBlock.getStartLine());
      } else {
        blocks.add(aBlock);
      }
    }
  }

  public List getAnnotateBlocks() {
    return blocks;
  }
}
